This action most likely brings the person to a landing page, which often includes a more complete description of the gated content, accompanied by an image or a short video designed to further entice the user. There is usually a more comprehensive form that the user has to complete and submit to access the content.
This form is one the most important components of the content-driven system because it collects valuable data from the prospect, which you use to qualify him/her as a lead for sales.
Since developing a relationship with a prospect is often a dance over time, you will work to get him/her to return a few times for other gated content. Each time s/he does is an opportunity to collect additional information and round out a profile of the prospect so that when it is handed over to sales, it includes valuable insights that help to close him/her.
Gated content has value for the prospect but requires that they exchange contact and other information to access it. It includes high-value content like videos, webinars, presentation decks, how-to guides, checklists, info graphics, etc.